Cortisol – PM

A Cortisol PM test measures the level of cortisol in your blood in the evening to determine if it is within the normal range. Cortisol is a hormone produced by the adrenal glands, located above the kidneys, in response to signals from the pituitary gland in the brain. Cortisol levels are typically highest in the morning and gradually decrease throughout the day, which is why the Cortisol-PM test is usually conducted after 4 p.m. to assess evening levels. It plays a key role in managing stress, regulating blood sugar levels, reducing inflammation, maintaining blood pressure, and supporting metabolism. Abnormal cortisol levels in the evening, whether too high or too low, may indicate an issue with the adrenal or pituitary glands or the presence of a cortisol-producing tumour. Untreated cortisol imbalances can lead to serious health complications, making a Cortisol PM test a crucial step in diagnosing potential problems. This test aids in managing issues related to adrenal and pituitary function.

The Cortisol PM test measures only one parameter: cortisol levels in the evening.

Cortisol levels naturally decline throughout the day due to the body's circadian rhythm. In the evening, lower cortisol levels help the body prepare for rest and recovery. In healthy individuals, cortisol peaks in the morning and gradually decreases, with evening levels being much lower—unless the person has an irregular sleep schedule.

Before getting the Cortisol PM test, there are several important factors to consider: Prerequisites You do not need to fast before getting a Cortisol PM test. Best Time to Get Tested This test is typically done in the evening when cortisol levels are lower, as per the body’s natural rhythm. Who Should Get a Cortisol PM Test? This test may be necessary if you exhibit symptoms of Cushing’s or Addison’s disease, which are linked to abnormal cortisol levels. Cautions Before Taking a Cortisol PM Test No specific precautions are needed before taking this test. Your doctor will notify you if there are any additional instructions.

A doctor may order a Cortisol PM test for several reasons, including:

• Assess Hormonal Balance : Measures cortisol levels to ensure they are within a normal range, which is vital for overall health.

• Diagnose Adrenal Disorders

  • Muscle weakness

  • Easy bruising

  • Changes in sex drive

  • Increased fracture risk

  • Weight gain

  • A round face

  • Thin arms and legs

  • Fat accumulation around the neck or shoulders

  • Purple streaks on the skin

  • High blood pressure

  • Red, round face

  • Slow wound healing

  • Excessive hair growth or hair loss

  • Mood swings

  • Stunted growth in children

Symptoms of Addison’s disease may include:

• Monitor Medication Effects : Helps assess impact of medications that affect cortisol levels on your hormone balance.